I didn't have a specific number in mind, but decidedly not an arena, auditorium, many modern churches or outdoor venues.
I like folded horns, but they have their limitations. They usually don't go particularly low, though that's true of most bass cabinets, and they are almost universally long throw speakers. Great for big rooms and outdoors, even ion long, narrow rooms if you're playing at one end and can fire it down the length, but not much good at all if you need a wide spread, as in most rooms smaller than the above-mentioned arenas, etc.
